Packer and setting tool



Feb. 24, 1925. 1,527,209

J. D. NixoN ET Ai.

PACKER AND SETTING TOOL Filed Oct. 8, 1925 2 Sheets-Sheet 1 720 l 2b@ l Y I 5 3 3 3 4 au I7 l@ 20 T 6 H y d5 22 a? d' Z.

' I l 7/l Feb, 24, 1925. 1,527,209

J. D. NIKON ET AL PACKER AND SETTING TOOL Filed Octl 8, 19,25 2 Sheets-Sheet 2 *i SMI Z V`\ A @ukuwq y Patented Feb., 24, 1925.

UNITED STATES PATE FFIC'E.

TEDDY D. NIKON AND WAHM. I. CHURCH, 0F HOUTON, TEXAS.

PACKED.

G TOOL.

Application med October 8, im. Serial No. 687,208.

To all 'whom it may concern:

Be it known that we, JEDDY D. Nixon and WALTER L. CHURCH', citizens of the United States, residing at Houston, in theV county of Harris and State of Texas, have invented certain new and useful Improvements in a Packer and Setting Tool, of which the following is a specification.

This invention relates to new and useful l0 imrovements in a packer and setting tool. ne object of the invention is to provide a device of the character described embodying a packer for formin a water tight joint between the walls o 'a well bore, or

casing in the well. and an inside pipe, or

liner, set in said bore or casing, and embodies also a tool for setting or expanding said packer, and means for holding the packer in set, or expanded position.

' l0 Another object of the invention resides in the provision ot a device of the charucicr described through which vthe liner, or iusidil pipe, may he set in the bore, with its lower 0nd securely seated in the bottom of "'5 tlul bore, and the packer then set so as to form a water tight joint between the upper endof the inside pipe and the casing, or walls of the bore, and the setting tool then released and withdrawn without unseating :i0 the inside pipe, or lifting it from its seat in the bottom of the bore.

A further feature of the invention resides in the provision of a sett-ing tool by means oi' which the amount of expansion of the parker can bc readily ascertained by the workmen at the ground surface.

still further feature of the invention resides in the provision of a setting tool for pac-kers to which a full string of pipe may be connected without reducing the working diameter ot the bore, in case the packer should leak from beneath, or the casing should develop a leak abm'e the packer.

Withthe above and other Vobjects in View,

the. invention has particular relation to certain novel Ifeatures of construction, operation and arrangement of parts an example of which is given in this specification and illustrated in the accompanying drawings, wherein 50 Fi ure 1 shows a side elevation of the comp ete device, shown partly in section.

Figure 2 shows a side view, partly in section, of the packer and means for securingr the same in expanded position. i'

Figureshows a transverse sectional view, taken on the line 3 3 of Figure 2.

Figure ll'shows a side elevation, partly'in section, of the setting tool.

Figure 5 shows a transverse sectional 60 vilw, taken on, the line 5-5 of Figure 4; an p `Figure 6 shows a transverse sectional view taken on the line 6-6 of Figure 4.

u Referring now more particularly to the 05 drawings, wherein like numerals of reference desie'nate similar parts in each of the figures, tlie numeral l designates the stem, or string of pipe which extends up to the ground surface, and through which the packer and setting tool are handled. A coupling 2 is screwed onto the lower end of this stem and a tubular reducing nipple 3 is threaded into the lower end of this coupling, the lower end of saidinipple being rounded oli', or tapered, as at 4. The numeral 5 designates a tubular mandrel whose upper end is attached to the lower end of the nipple, and whose lower end is dared, as at 6, and externally threaded. On the mandrel 5 there is a slidable sleeve 7, whose lower end is reduced forming a bushing 8, and both externally and internally threaded, and this lower end is vertically slotted, the slots 9 extending on up partly through the 85 sleeve 7 sor to provide for the expansion and contraction of the bushing 8. The inside contour of the bushing 8 is similar to the contour of the flared lower end of the mandrel 5, but of somewhat smaller diameter, 9o so as to be expanded thereby as hereinafter explained.

`A tubular connecting nipple 10 is prol vided whose upper end is internally thread- `seat on the bottom of the bore.

ed toreceive the bushing 8. The lower end of the connecting nipple 10 has an annular seat 11l and beneath it is reduced and threaded to receive the coupling 12, by means of which the liner, or inside ipe 13,

is connected to the nipple 10. This liner provided a wash pipe 14, whose upper eind carries a collar 15, forming a head which rests on the upper end of the reducing nipple 3, and sustains said wash pipe. This pipe extends down well towards the bottom of the bore so as to carry the water down past said screen" in washing out the well.

There is a sleeve like packing element, as 15, around the nipple 10 and resting on the seat 11. This packing element may be formed of rubber, as shown, or of fabric,

as burlap or the like, or of any other suitable expansible material.

Fitted over the upper end of the connecting nipple 10 and seated on the upper end of the packer 15, there is a collar 16. whose upper end has vertical slots 17 forming the yieldable dogs 18, integral therewith.'

The upper end of the nipple 10 has externa-l left hand buttress threads 19 and the dogs 18 are correspondingly internally threaded so as to mesh with said threads 19.

Threaded onto the collar 16," by right hand threads, and upstanding therefrom, there is the` elongated tube 20 whose upper end. is formed with a flared seat 2l, for the purpose to be hereinafter explained.

The operation of the device is as follows The tool is assembled as shown in Figure 1 with the bushing 8 threaded down` onto, and expanded by, the flared expander 6, and said bushing is also threaded into the upper end of the nipple 10. The liner 13 is connected tosaid nipple and the complete device as thus assembled is connected, as explained, to the stem 1. lVhen thus assembled, the couplingr 2 will be spaced a few inches above the seat 21, but -a rigid connection will be provided between the stem and liner, and said liner may be forced down until its lower end forms a perfect The stem 1 may now be rotated to the right, and the expander 6 thus unscrewed from the bushing 8, and when so unscrewed will pass below said bushing, as shown in Figure 4, and the mandrel 5 will then slide downwardly through the sleeve 7. Above said sleeve, the mandrel is yprovided with leftI hand buttress threads 22, and the upper end of said sleeve 7 has the vertical slots 23, staggered with relation to the slots 9, so

as not to unnecessarily weaken the sleeve,

inclined, they will not engage with, but will pass between said dogs 24, and beneath them, and thel bushing 8, when `released by the expander 6 will contract and free itself from engagementwith the inside threads of the connecting nipple 10. The collar 2 will now rest upon the seat 21, and through the tube 2O will force .the collar 16 downwardly and expand the packing element 15 out against the casing, or walls of the bore and form a water tight joint therewith. The teeth 19 decline so that the dogs 18 during their downward movement will readily expand and pass over said, teeth but will engage therewith to prevent the upward movement of said collar, and they thus hold the packer in expanded position when the stem is withdrawn.- During this operation no upward pull is exerted on the liner, as in the case of packer setting tools now used, and there is no danger of unseating said liner from the bottom of the bore, but on the other hand, a downward pressure is exerted against the liner, thereby seating it more securely in the bore.

The distance vof the coupling 2 above the scat 21, when the device is assembled, is known. When the expander 6 is released from the bushing 8, and the stem forced downwardly, as explained, the total down.- ward movement can readily be observed by the workmen, and this total distance, less the distance of the collar 2 above the seat. 21, when assembled, will accurately indicate the amount of expansion of the packing element 10.

When the packer is set, the stem may be pulled upwardly carrying the mandrel 5 with it and as said mandrel moves upwardly, the teeth 22, nwill engage with thc dogs 24, and carry the sleeve 7 along upwardly with the mandrel, and the bushing 8 being in contracted position will readihv pass through the inside threads of the nipple 10 and the setting tool may thus be' withdrawn with them, leaving the packer securely held in expanded position by the collar 16 and the dogs 18 thereof.

In some cases the packer will leak, permitting water to nd its way from beneath up past the packer, and in the other case the casing above `the packer will develop a leak; in such cases a full string of pipe must be connected to the liner and extended to the ground surface, as otherwise saidwwater.. would Venter the top of the liner and mingle amanece must necessarily be of smaller diameter than said structure and does not therefore provide adequate room for the pump rods, and makes it diilicult to work through said string on account of said` restrictions.

The tube of the structure herein described makes the same water tight and in case it becomes necessary to employ a full suihcientspace `for vthe string of pipe from the packer structure, to the surface of the -Ground, the ordinary lead'seal may be attac ed to the lower end of said string and the string then lowered until said seal seats on the seat 21, anclforms a water tight joint therewith.

It is apparent that the string above the packer may be of the same inside diameter as that of the liner beneath, thus providing pump rods, or for working through said string when necessary.

We have shown and described what we now consider the preferred form of the device, but it is apparent that structural variations may be made from the form shown Without departing from the principle of the invention, and We hereby reserve the right to make such modiiications in structure as will not depart from the scope of the appended claims.

What We claim is:

1. In a setting tool, a mandrel, a flared expander carried thereby, an expansible bushing adapted to lit over and be expanded by said expander, and a tubular support, Jfor a packing element, into which the bushing is titted.

2. In a setting tool, a mandrel, ailared externally thrcadedexpander carried thereby, an expansible bushing internally threaded to receive said expander, said bushing being also externally threaded, a tubular packer support internally threaded to receive said bushing.

3. In a setting tool, a mandrel, a flared externally threadedexpander carried thereby, an expansible bushing "mounted on the mandrel, and internally threaded to receive and be expanded by said expander said bushing being also externally threaded, a tubular packer support internally threaded,

lto receive said bushing, and to mesh therewith 'when the bushing is in an expanded position.

4. In a settin tool, a mandrel, a flared externally threa ed expander carried thereby, an expansible bushing internally threaded to receive Said expander, said bushing being also externally threaded, a tubular packer support, internally threaded to receive said bushing, a pac in on said support means mounted on sai support and ada ted to operate against, and expand, said pac 'er, and interlocking means carried by said support and packer expanding means, respectively operating to hold the packer in expanded position.

5. In a setting tool, a mandrel, a flared externally threaded expander carried thereby, an expansible bushing internally threaded to receive said expander, said bushing being also externally threaded, a tubular packerysupport, internally threaded to receive said ushing, a packing on said support means mounted on said support and ada ted to operate aoainst, and expand said pac ier, and interloc ing means carried Aby said support and 'packer expanding means,` respectively, operating to hold the packer in expanded position, means mounted on said support and adapted to operate against, and

`expand said packer, and formed to interlock with the support to hold the packer 9o in expanded position.

6. A. packer setting tool including a mandrel, a flared expander carried thereby, an expansiblc bushing mounted on the mandrel, and adapted to receive and be expanded by said expander, a tubular packer support formed to receive and interlock with the bushin when the later'is expanded, a packer on sai 4support a packer expanding element -fitted around the support and prvided to operate against and expand said packer, and interlocking means carried by the expanding element and packer su port, respectively, through which the pac :er is held in expanded position.

7. A packer setting tool including a mandrel, a ilared externally threaded expander carried thereby, an expansible bashing mounted on the mandrel and internally threaded to receive and mesh with said ex- 11o pander, said bushing' being also externally threaded, a packer support having internal `threads to receive and mesh with said bushing when the same is expanded, a packer on said support a packer expanding means .11'5 around the support and adapted to operate against and expand the packer, engaging dogs carried by said packer expanding means and adapted to engage with said support, and hold the packer expanded.

8. A packer setting tool including a mandrel, an expander carried thereby, an expansible bushing movably mounted on the mandrel and formed to receive and be expanded by the expander, a packer support formed to receive and interlock with the bushing when the latter is in expanded position, apacker on said support a collar surrounding said support, and adapted to operate againstand expand said packer, yield- Y @Il able dogs carried b said collar and n engagement with sai support.

49. A packer setting tool including a mandrel, an expander carried thereby, an expansiblebushing movably mounted on the mandrel and formed toreceive, and be expanded by, the expander, a packer-support formed to receive and interlock with the bushing when thelatter is in expanded posi? tion, a packer on said support a collar surrounding said support, and adapted to operate'apainst yand 'expand said packer, yieldable dogs carried by said 4collar and in engagement with saidsupport, and a tubular extension opstanding from saidcollar whose upper end is formed with a seat.

1(1.A packer setting tool including 'a mandrel, a flared -externally threaded ex-I pander carried thereby, an expansible'buslr' ing mounted on the mandrel and internally threaded to receive and mesh with said 'ex-- pander, said bushing beingy also externally threaded, a packer support having internal threads Ito receiveY and mesh with said bushreceive said expander, said bushing being a1- so externally threaded, a tubular packer suport, internally threaded to receive said 1bushing, a packer on said support, means mounted on said support and adapted to operate against, and expand, said packer,

and interlocking means carriedby said supf port and packer expanding means, respectively, opera-tingr to hold the packer in expanded position, an upstanding tubular member carried by the packer-expanding means and surrounding said interlocking means, and adapted to actuate the packerexpanding means against the packer.

12. In a setting tool, a mandrel, a flared externally threaded expander carried thereby, an. expansible bushing .internally threaded to receive said expander, said bushing-,being also externally threaded, a tubular packer support, internally threaded to receive said bushing, a packer on said support, means mounted on said support and adapted to operate against, and expand, said packer, and interlocking means carried by said support and packer expanding means, respectively, operating to hold the packer in expanded position, and an upstanding tubular member carried by the packer-expanding means and surrounding said interlocking means, the up er end of said tubular member being forme with a flared seat.

13. A packer settin tool including a mandrel, a, flared expan er carried thereby, an expansible` bushing movably mounted on the mandrel 'and formed to receive and be xpanded by the expander, releasable interlocking means carried by the bushing and mandrel, respectively, through? which the expander maybe heldin' inactive position. relative to the bushing, a packer support formed'to receive and interengage' with, the bushing when the latter is expanded, a packer on said support a packer expander around said support, interengaging means carried byysaid packer-expander and said support.

14. A packer setting tool including a man drel, a'flared expander carried thereby, an cxpansible bushing movably mounted on the mandrel-and formed to receive. and be expanded', by the expander, releasable inter-v locking means carried by the bushing and mandrel, respectively, through which the expander may be held in inactive position, relative to the bushing, a packer support formed to receive and interengage lwith, the bushing Whenithe latter is expanded, a packeron said support alpacker expander around said support, interengaging means carfied by said packer-'expander and said support, a stem to the lower end of which the mandrel is att-ached, and means sustained by said packer-expander and sustaining the Weight of said stem.

15. A packer setting tool including a mandrel, a flared expander carried thereby, an expansible bushing movably mounted on the mandrel and formed to receive and be ex panded by the expander, releasible interlocking means carried by the bushingl and mandrel, respectively, through which the expander may be held in inactive position, relative `to the bushing, a packer support formed to receive and interengage with the bushing when the latter is expanded, a packer on said support a packer expander around said support, interengaging means carried by said Ywicker-expander and said support, a stem to which the mandrel is attached, and an upstanding tubular member carried by ing the load of said stem.

16. A packer setting tool including a, mandrel, a flared outwardly threaded expander carried thereby, an expansible bushing movably mounted on the mandrel and in-4 ternally threaded to receiveand mesh with the expander, said bushing being also ex ternally threaded, a packer support internally threaded to receive and mesh with the bushing when the latter is expanded, a

the packer-expander, and sustain-y packer on said support a packer expander adapted to operate against and expand the menace packer, interlocking means carried by the packer expander and said support, respectively, and operating to hold the packer expandcd, a stem to which the mandrel is attached, an upstanding tubular member carried by the packer-expander and sustaining the weight of the stem` v V17. In combination, a tubular support having internal threads, an expansible packing element on said support, a packing expander sustained lay/said packing element, interlockin meansrcarried by said sup ort and expan er, respectively, an upstan ing tubular member-attached to said expander and adapted to actuate the same .against said packing` element, a mandrel Within said tubular member, a flared-externally threaded expander carried b the mandrel, an expansible internally threaded bushing formed to receive and `mesh with said flared expander, said bushing; being also externally threaded to mesh with the threads of said support when said bushing is expanded;

18. In combination a tubular support having internal threads, an vexpansible packing element on said support, a packing expander' sustained by said packing element, interlocking means carried by said support and expander, respectively, an, npstanding tubular member attached to said expander, a

mandrel within said tubular member, a

flared externally threaded expander carried by the mandrel, an expansible internally threaded bushing formed to receive and mesh .with said iared expaiider, said bushing being also externally threaded to mesh with the threads of -said support when said bushingl is expanded, avstem to which said mandrel is attached, an external shoulder on the stem adapted to rest on said tubular member. i

19. In combination, a tubular support having internal threads, an expansible packing element on said support, a collar sustained by said packing'l element, yieldable dogs carried by said collar, and adapted to engage with said support, a mandrel, a

flared externally threaded expander carried' by the mandrel, a sleeve Whose lower end is formed into an internally threaded, expansible bushing provided to receive said fla-red expander and be expanded thereby` dogs carried-by said sleeve, means on the mandrel provided to engage with said dogs of said sleeve to hold said bushing in inactive position relative to said flared expander, said means being releasable from said dogs, said bushing being also externally threaded and adapted to enter and interinesh with the threads of said support.

20. In combination, a tubular support having internal threads, an expansible vpacking element on said support, a collar sustained by said packinL element, yieldable dogs carried by said co ar, and adapted to ber supported by and upstandingf'from said collar, adapted to actuate the packer expandingr means against the packer.

21. In combination a tubular support having.,r internal threads, an expansible packing element von said support, a collar sustained by said packing element, yieldable dogs carried b v said collar, and adapted to engage with said support, a mandrel, a ilared externally threaded expander carried by the ,mandi-el, a sleeve whose lower end is formed into an internally threaded, expansible bushing provided to rece1ve said Hared expander and be expanded thereby, dogs carried by.

said sleeve` means on the mandrel provided to engage with said dogs, of said sleeve to hold said bushing in inactive position relative to said flared expander, said means being releasable from said dogs, said bushing ybeing also externally threaded and adapted to enter and intermesh with the threads of said support. a tubulir member supported by and upstanding from said collar, and Whose upper end is formed With la flared seat.

22. 'In combination a tubular support having internal threads, an expansible packingr element on said support, a collar sustained by said packing element, yieldable dogs carried by said collar, and adapted to engage with said Support, a mandrel, a flared externally threaded expander carried by the mandrel, a sleeve Whose lower end is formed into an internally threaded, expansible bushing provided to receive said flared expander and `be expanded thereby, dogs earriedby said sleeve, means on the mandrel provided to engage `'With said dogs of said sleeve to hold said bushing in inactive position relative to said flared expander, said means being releasable from said dogs, said bushing` being also externally threaded and adapted to enter and intermesh with the threads of said support, a tubular member supported by and upstanding from said collar, and Whose upper end is formed with a liared seat, a stem to the lower end of which the mandrel is attached, said stem havin an external shoulder adapted to rest on said seat.

23. A setting tool including a mandrel, a

ared ex ander carried thereby, an ex an-A sible 'bus ing adapted to fit over an be expanded .by said expander and a tubular member into which said bushing is fitted.

24.l A setting tool including a tubular member, a mandrel, a flared expander car- `ried 'by the mandrel, a sleeve whose lower end is formed into an expansible bushing provided to receive said expander and to be expanded thereby, interengagin means carried bysaid sleeve and mandre respectively; and adapted to holdsaid bushin in inactive posit-ion relative to the ex an er, said interlockingI means being releasa 'le and said bushing bein ladapted to enter said tubular` support, sai support and bushingv being formed to interlock. v f

25. In a dev iceof thecharacter described a tubular support, whose .upper-endf has internal right hand 'thrc-zads,l adapted to receivey asettingtool, a`n expansible packing element on-said support, a 'collar onfsai support abutting against Asaid. packing element,vyieldable dogs associated kwith ysaid collar and adapted to engagemtln support and a tubularmember associated with the collar through which the collar may `beactuatedto expand the packer, the upper end of the tubular member having a iared seat.

26. In a device of the character described a Atubular support, an expansible packing element on said support, a-tubular upstanding member sustained by the vpacking element and through which said packing element may be expanded, and interlocking means through which said tubular member may be iocked, in relation to the support to hold the packing element in expanded position.

27. A setting tool including a mandrel,

'- 28. A settin usamos whose lower end is dared and externally threaded, a bushin having an internally threaded section a apted to receive said fia-red end of the mandrel, and releasable interlocking means carried by said mandrel I and'bushing respectively. y

tool includin a mandrel having a ilare portion, a bushing having an `internal liared section adapted to receive said fiared portion of the mandrel, said bushing also having external threads, to re ceive a tubular packer support anali?u releasable interlocking means carried by swi'dmadrel and bushing respectivel 29. VA setting tool includlng ar mandrel having a threaded flared portion, a bushing on the mandrel having an internally threaded section adapted. to -receive the. flared portionofthemandrel, said bushing also having external threads, to receive a packer support, and releasablev interlocking means carried by the mandreland bushing `respec- 30. .A setting tool 'including la mandrel having a iared portion, an expansible bushing on the mandrel having an internal iared section adapted to receive the ared portion of the mandrel to expand the bushing, said W. H. DUNLAY, E. V. HARDWAY. 

